Fix hotkey problems - Githubissues

This pull request fixes many problems regarding hotkeys. Summary of the fixed problems:

Many hotkeys processed by the plugin are ambiguous due to inconsistent checks. For example, Ctrl-G (Apply command) can also be processed as Ctrl-Alt-G or Ctrl-Shift-G.
Insert full file name action (bound to Ctrl-F hotkey) inserts full file name as a "session url" like ssh://user@localhost:22/tmp/abc.txt which is not actually the full file name. Several issues were created to argue with such a behaviour. This pull request provides a better alternative - release Ctrl-F hotkey and bind the action to Ctrl-Alt-F.
Aforementioned insert full file name action inserts empty prefixes for all protocols except scp / sftp.
A hotkey Ctrl-; (Ctrl-Alt-;) shows incorrect results and may lead to a crash.
NetBox binds two hotkeys to one action (Ctrl-Alt-Ins, Alt-Shift-Ins) not allowing Far to provide a different alternative action. It's better to keep only one hotkey (Alt-Shift-Ins), thereby allowing users to use both actions.
Unable to show command menu (Alt-Shift-W) when editing a file.
Edit history selects the wrong file (multiedit mode is on).
Synchronize checklist misses Alt modifier in Alt-Right hotkey (horizontal scrolling), also horizontal scrolling is not working.

Pos. 2 mention this issues: 1 and 2

michaellukashov / Far-NetBox